package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.common.PageResult;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.SetmealDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.mapper.SetmealMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.SetmealDishService;
import com.itheima.reggie.service.SetmealService;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐管理控制层
 */
@RestController
@RequestMapping("/setmeal")
@Slf4j
public class SetmealController {

    @Autowired
    private SetmealService setmealService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishService setmealDishService;


    @PostMapping
    //清除setmealCache名称下,所有的缓存数据
    @CacheEvict(value = "setmealCache",allEntries = true)
    public R<String> save(@RequestBody SetmealDto setmealDto){
        log.info("套餐信息：{}",setmealDto);
        setmealService.save(setmealDto);
        return R.success("新增套餐成功");
    }




    /**
     * 套餐分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);

        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null, Setmeal::getName, name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo, queryWrapper);

        //对象拷贝
        //2．手动封装到Page<SetmealDto>对象中
        Page<SetmealDto> dtoPage = new Page<>();
        //2.1对象拷贝，忽略records集合属性
        BeanUtils.copyProperties(pageInfo, dtoPage, "records");
        //2.2处理查询的集合数据
        List<Setmeal> records = pageInfo.getRecords();

        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item, setmealDto);  //还是没有分类名称，只有id
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        dtoPage.setRecords(list);
        return R.success(dtoPage);
    }

    /**
     * 套餐删除
     *
     * @RequestParam List<Long> ids:接收集合方式  一定要加上@RequestParam
     */
    @DeleteMapping
    //清除setmealCache名称下,所有的缓存数据
    @CacheEvict(value = "setmealCache",allEntries = true)
    public R<String> deleteByIds(@RequestParam List<Long> ids) {
        log.info("ids:{}",ids);
        setmealService.deleteByIds(ids);
        return R.success("套餐删除成功了");
    }


    /**
     * 根据条件查询套餐数据
     *
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    @Cacheable(value = "setmealCache", key = "#setmeal.categoryId + '_' + #setmeal.status")
    public R<List<Setmeal>> list(Setmeal setmeal) {
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId, setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null, Setmeal::getStatus, setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }


    /**
     * 进入修改
     * 根据套餐主键id查询菜品数据（菜品表+菜品口味表数据）
     *
     * @param setmealId
     * @return
     */
    @GetMapping("/{id}")
    public R<SetmealDto> findById(@PathVariable("id") Long setmealId) {

        return R.success(setmealService.findById(setmealId));
    }

    /**
     * 修改
     *
     * @param setmealDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody SetmealDto setmealDto) {
        setmealService.update(setmealDto);
        return R.success("修改菜品信息成功了");
    }

    /**
     * 修改套餐状态,启用/禁用
     *
     * @param
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> update(@RequestParam List<Long> ids, @PathVariable int status) {
        int row = 0;
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.selectById(id);
            setmeal.setStatus(status);
            setmealMapper.updateById(setmeal);
            row++;
        }
        if (row != 0) {
            return R.success("修改成功了");
        } else {
            return R.error("修改失败了");
        }
    }


    }



